In response to the overwhelming demand and popularity of the MCP655 Series FrozenCPU.com has worked with Swiftech to bring you a more versatile version. Want your pump to run as quiet as possible? Now you can have that as well as the available power of the MCP655 in the all new MCP655-PWM. That is right, a PWM version on the MCP655!!

The MCP655 pump is a high reliability, high pressure industrial pump, featuring a 50,000 hour MTBF (5 year lifetime). Such reliability is afforded by the unique design of this pump, which contains only one moving part: the magnetically driven spherical impeller spins on a single ceramic bearing, thus extending the life of this pump beyond existing standards.

The pump is completely plug-and-play, and connects directly to any computer power-supply through standard 4 pin power connectors and a PWM 4-Pin header. It's compact design, quiet and powerful motor make it ideally suited for heavy duty cooling in environments where space is at a premium.

This pump comes stock without any housing allowing you to integrate any of your favorite pump tops and pump accessories.

The MCP655-PWM-DRIVE can be used with full confidence in any MP servers, and high-end workstations

Superior real world performance versus any aquarium pump we have tested to this date

The high pressure capability of the MCP655-PWM is particularly well adapted to high-flow systems using 1/2" ID or 3/8" ID Tubing

Compact Design

No maintenance when used with de-mineralized water, and anti-fungal additives (Swiftech HydrX additive is recommended)

Nominal voltage:

12 V DC

Operating voltage range:

8 to 24 VDC

Nominal power (@ 12 V):

37 W Max

Nominal current (@ 12 V):

2 amps

Motor type:

Brushless, microprocessor controlled

Maximum head:

13 ft (4 m)

Maximum discharge:

~ 317 GPH (1200 LPH) Performance will vary based on housing used

Total Reviews: 9 Average Rating:

can run silently

02-16-2015Reviewer: Anonymous
My computer is nearly silent so I needed a pump to match. I found it too noisy until lowered to about 1500 RPM which is perfect in terms of silence while still pushing enough water.

Amazing

11-12-2014Reviewer:mrnuke (21)
It works great. Lots of flow. A little on the noisy side, but the PWM control fixes that. The construction is great. Every little part of this pump reaks of quality.
I only have two complaints. For one, the wires have no stress relief coming out of the pump''s body. Second, the wires are not sleeved. Both of these issues can be easily solved with a bit of patience.
Overall, this is probably the best D5 pump money can buy.

Round 2

09-12-2014Reviewer:Kepler (1)
The pump was great until it failed about 6 months after installation. I managed to get a replacement, but this time I think I''m going to leave the PWM controller disconnected from the motherboard and just run it at full speed. Maybe something about the varying speed wears out the pump or something...

Not reliable

08-15-2014Reviewer:sobolz (1)
Quiet and powerful as advertised.
But.
Worked for less than half a year and then suddenly died. Something with the controller. It doesn''t turn on and mobo displays a CPU fan error.
Does anyone have schematics?

Very nice flow, and quiet with Feedback and control. Awesome!

06-27-2013Reviewer:DEPHIC (6)
Very quiet. Can''t hear them on highest setting unless I put my ear right next to them. Moves alot of water. I have 2 in parallel configured to shut my pc down if they ever stop working. My XSPC reservoir scared me enough to switch to something I could run parallel in case a pump failed. Running 2 MCP655''s in a Koolance rp-452x2 reservoir.